1. Of or belonging to astronauts or the science of astronautics
   - astronautical

See also: astronaut, astronautics

• complement fixation
• complement fixation test
• complemental
• complementarity
• complementary
• complementary angles
• complementary color
• complementary colour
• complementary distribution
• complementary DNA
• complementary medicine
• complementation
• complete
• complete blood count
• complete fracture
• completed
• completely
• completeness
• completing
• completion
• complex
• complex absence
• complex body part
• complex conjugate
• complex fraction